code: def __init__(
      self,
      config,
      parent_name=None,
      name="ssd_feature_extractor",
      **kwargs,
  ):
      super(SSDFeatureExtractor, self).__init__(
          config, name=name, **kwargs
      )
      if self._architecture not in VALID_SSD_ARCHITECTURES:
          raise ValueError(
              'Invalid architecture "{}"'.format(self._architecture)
          )
      self.parent_name = parent_name
      self.activation_fn = tf.nn.relu
  
file_path: luminoth/luminoth/models/ssd/feature_extractor.py
imports: import sonnet
  import tensorflow
  from sonnet.python.modules.conv import Conv2D
  from tensorflow.contrib.layers.python.layers import utils
  from luminoth.models.base import BaseNetwork
label_desc: Use image node_id 1 to create a new SSDFeatureExtractor object from inherited base classes: BaseNetwork with example: obj = SSDFeatureExtractor(config, parent_name, name)